Genetics of Insulin and Incretins in Cystic Fibrosis
Evaluation of the Enteroinsular Axis in Cystic Fibrosis
About This Trial
Cystic fibrosis related diabetes (CFRD) is associated with worse CF-relevant outcomes. The mechanisms underlying CFRD development are not fully understood, but recent evidence suggests Type 2 Diabetes Mellitus (T2DM) mechanisms may be involved and may involve incretins (gut secreted hormones that augment insulin secretion in response to a nutrient load). This study will examine the prevalence of Genome wide association study (GWAS)-implicated T2DM alleles (including TCF7L2) across the spectrum of glucose abnormalities in CF and will use this information to compare incretin and insulin secretion in non-diabetic children and adults with high risk and low risk alleles.
Who May Be Eligible (Plain English)
Original Eligibility Criteria
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Treatments Being Tested
Blood or Saliva Sample Collection
A blood or saliva sample will be obtained for genotyping of TCF7L2 and approximately ten other genes implicated in type 2 diabetes.